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ecotec sandrail major issue
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VagNaToOtH
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PostPosted: Sun Apr 23, 2017 2:09 pm    Post subject: ecotec sandrail major issue Reply with quote

so i get my sandrail all together with the adapter kit they sell at apple tree auto for the 6 rib trans with the ecotec 2.2 and i go test drive it around the block and the flywheel bolts sheer off. i call the company who give me the manufacturers number who agrees to send me new bolts and tell me to torque them to 39 with some blue loc tite which i did.well i get 10 mins down the trail and the thing grenades and sheers all the bolts again and the guy has no idea and nothing to say. can anyone help me out thanks
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B Ramsey
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PostPosted: Sun Apr 23, 2017 3:08 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

Get some grade 8 domestic bolts and try again .
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jdcool4
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PostPosted: Sun Apr 23, 2017 3:30 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

It looks like it should be torqed to 39 plus 25 degrees i think i did 39 plus a little . If not maybe theres something wrong with there flywheel
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Dale M.
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PostPosted: Sun Apr 23, 2017 4:17 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

What are size of bolts..

https://zzperformance.com/ecotec/oem-flywheel-bolts.html

Seems to me first pass is 39 ft-lbs... Second pass additional 25°... According this this web site...

Dale
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VagNaToOtH
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PostPosted: Sun Apr 23, 2017 5:08 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

so i pulled the motor and my clutch is dam near melted to the flywheel i dont get it it ran and shifted fine for about 15 mins
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B Ramsey
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PostPosted: Sun Apr 23, 2017 8:26 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

I think you need a stronger clutch. That got really hot.
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VagNaToOtH
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PostPosted: Mon Apr 24, 2017 3:26 am    Post subject: Re: ecotec sandrail major issue Reply with quote

B Ramsey wrote:
I think you need a stronger clutch. That got really hot.
you think that would cause it to sheer flywheel bolts ?
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B Ramsey
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PostPosted: Mon Apr 24, 2017 6:39 am    Post subject: Re: ecotec sandrail major issue Reply with quote

VagNaToOtH wrote:
B Ramsey wrote:
I think you need a stronger clutch. That got really hot.
you think that would cause it to sheer flywheel bolts ?


it certainly didn't help. I would have the flywheel resurfaced and install a high HP clutch kit. And use quality hardware. with the right setup, there is no reason for this to be happening. Youre not tryng to do burnouts with 33' tires are you?

let see some photos of what you're working with, to better help.
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PostPosted: Mon Apr 24, 2017 7:43 am    Post subject: Re: ecotec sandrail major issue Reply with quote

That 39Ft*Lbs of torque figure can't be a stand alone figure. Either it is wrong or there is a torque angle following it up as others have suggested.

That flywheel got so hot I would check it over carefully. You may find surface cracks on it. Small ones radiating from the center to the perimeter shouldn't be an issue, but any that are circular can be the death of a flywheel. If all looks ok, you can just as easy resurface it. Shouldn't cost more than $20 at any automotive machine shop worth thier name. Wink
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Dale M.
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PostPosted: Mon Apr 24, 2017 8:03 am    Post subject: Re: ecotec sandrail major issue Reply with quote

Also flywheel bolt are 'ONE TIME' only, ... "Torque to yield" ... Do not reuse as the are stretched and torque values are skewed if trying to reuse....

https://en.wikipedia.org/wiki/Torque-to-yield_fastener

Dale
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VagNaToOtH
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PostPosted: Mon Apr 24, 2017 4:12 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

B Ramsey wrote:
VagNaToOtH wrote:
B Ramsey wrote:
I think you need a stronger clutch. That got really hot.
you think that would cause it to sheer flywheel bolts ?


it certainly didn't help. I would have the flywheel resurfaced and install a high HP clutch kit. And use quality hardware. with the right setup, there is no reason for this to be happening. Youre not tryng to do burnouts with 33' tires are you?

let see some photos of what you're working with, to better help.
no burn outs all i did was go around the block they broke then i put it all back together went down the trail maybe 15 mins and its grenaded i
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VagNaToOtH
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PostPosted: Mon Apr 24, 2017 4:14 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

manufacturer says the bolts supplied are grade 10.9
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VagNaToOtH
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PostPosted: Mon Apr 24, 2017 4:16 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

oh and thank you all for your help!!!
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VagNaToOtH
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PostPosted: Mon Apr 24, 2017 4:22 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

Dale M. wrote:
Also flywheel bolt are 'ONE TIME' only, ... "Torque to yield" ... Do not reuse as the are stretched and torque values are skewed if trying to reuse....

https://en.wikipedia.org/wiki/Torque-to-yield_fastener

Dale
yes sir both sets of bolts where brandy new
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pallen
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PostPosted: Wed Apr 26, 2017 12:00 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

There has to be something else going on, I would be inspecting everything very closely.
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VagNaToOtH
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PostPosted: Thu Apr 27, 2017 6:12 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

so what iv come up with is the clutch wasnt strong enough to hold at high rpm and made everything super hot and soft also found cracks in flywheel between the bolt holes so im working on getting the proper clutch and a new flywheel and ill keep ya posted
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race-desert
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PostPosted: Thu Apr 27, 2017 9:01 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

I run a kenedy stage 2 with 33 tires..
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Sandbar Norm
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PostPosted: Fri Apr 28, 2017 7:29 am    Post subject: Re: ecotec sandrail major issue Reply with quote

I also use a kenedy stage 2 with a kush lock disc.
My had some slipping issues and it was the hyd slave cly. not releasing completely.
It had a little bind so I reworked the mounting bracket.
Works good now.
Norm
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VagNaToOtH
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PostPosted: Sat Apr 29, 2017 7:29 am    Post subject: Re: ecotec sandrail major issue Reply with quote

i did not have the kennedy clutch system before. they warrantied the flywheel and i ordered the proper clutch.ill have everything next weekend and will keep yall posted thankyou
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VagNaToOtH
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PostPosted: Tue May 09, 2017 3:36 pm    Post subject: Re: ecotec sandrail major issue Reply with quote

ok got all the parts yesterday and put her together some lastnight and finished her up tonight send some prayers my way this will be round 3 will drive it this weekend
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